664708276 has 12 divisors (see below), whose sum is σ = 1190291872. Its totient is φ = 324624888.

The previous prime is 664708271. The next prime is 664708301. The reversal of 664708276 is 672807466.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664708271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1932120 + ... + 1932463.

Almost surely, 2^664708276 is an apocalyptic number.

It is an amenable number.

664708276 is a deficient number, since it is larger than the sum of its proper divisors (525583596).

664708276 is a wasteful number, since it uses less digits than its factorization.

664708276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3864630 (or 3864628 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 46.

The square root of 664708276 is about 25781.9370102403. The cubic root of 664708276 is about 872.7242198428.

The spelling of 664708276 in words is "six hundred sixty-four million, seven hundred eight thousand, two hundred seventy-six".